Apparatus for molding conduits in concrete, &amp;c.



PATENTED AUG. 25, 1908.

D. L. HOUCIH.

APPARATUS POR MOLDINC CONDUITS IN CONCRETE, 50.

2 SHEETS-SHEET l.

APPLICATION FILED SE PT.7.19OG.

A TTU/MEI.

Wl TNESSES JATENTED AUG. 25, 1908.

D.L.H0UGH. MOLDING GONDUITS 1N GONGRETB, (gw. APPLICATION FILED SEPT. 7,1906.

APPARATUS FOR Z SHEETS-SHEET Z.

A Tra/mfr.

w1 misses UNITED STATES PATENroFFio a DAVID LEAVITT HoUGH, or YORK, N2

' APPARATUS FortMoLDiNG' CNDUITS mvl To au whom it 'may cohcmf Bei known that I, D VID LEAVITT HOUGHQ L ofth'e city, count ,and-'State of New York,y l have mventedan improvement in Apparatus gffor Molding Conduits in Concrete, &c.,: of

'Which the following is va speciicatioiijl' i 'Q Difficulty is niet inmaking 'conduits 'for f terra cotta or vitr'ifiedfclay conduit. is 'satisi0' l lming-of thef concrete 'while'inl a plastic con dition is4 liable t'OLraGtUre the conduity sec! W init-1a etitg tofm'ettttt together, ana the 'tomatejv dramngjont for removal fofeach section A- 1 C54-C're'spectively 'of rising itfareex'tended or. drawn apart.v f

' SpfcaonfIt1=erSPatentf limitante@ u t-,.-19ta; Applicatim filed Sptem'be, 1,906. Seriana 3233965 pieces b4 lso that maximum section.-

factory 'it'.is'; very diiiicult to mak-e .a con-' fdlt' of; that'kind in 4af-bodyof concrete or the bends and channe the' outer'sdes of 4said b crete is set, arefconj- 'by a loose or exibleiconnecti'o m'an'nerthat the 'longt al 11th:- tha'tjfeathjsection is'jnde collapsed orjc'ontact'echand the"` *ne'ction consists of chai the Jpiece's. ai "to l -1 :Wardtfithe pieces forine oi'fsec'ti'on-consists of, parts 7 collapse; that section` 'lapset e-next Sectio' Thelront ends' ofthetin r'ne i .b are. shown also. l rovided mpl-epgtntaryto the ttt-peiedjjadggptdit@ strike@ together, as "showni a hollow tubeor forth When the pieces o, tu'dinally, one Set other, the ta ered'long u on one anot er Wil1j 'lract"'o i collapseint a niall'e 4 section as shown in 'Fig 2; heparts a and metal 'and the engagiii formed in anv convena shown -the' edges of the' vided With .L bends pieces b with longitii were, mi be lh ovveNer,` details which. aie Successive 'forinersare one former, [after .Tit-"lha jf. A s shown inthe .dra

rearends of thelcorner The corner reces 'q1/are,

that iat-fliegt; .the piece" puin 'Outtmv-ipittestane` 10,5

contract and expand the peripheral'area of theiiormer. l

"L A collapsible `former for molding4 con in concrete and plasticvmaterisil coneietingoi ttjfo sets of parts, the outer surfaces of vrhicli constitutethe mold surface, the parts of one set being connected with the ,t of the other set by complei'nentary longitudinally tapered .interlocking guides,

ot t id sets of parts Will7 through said interlew g guides, positively draw in and force ci e adjaac'ent parts of the other set and a and eigpand'the peripheral area of M former, and stops between said sets of ts to limit the extension and contraction-l fir;

An apparatus for molding conduits in ci crete and plastic material composed of a seriesoi 'independent sections 'orforiners each consisting of tw'osets of parts, the parts et one set being connected with 'the-parts of im. tii* other set by complementary longitudinal ta eredguides, Wherebythe extension .of one ci' said sets of parts with reference-to the other set will 4cause the former to contract or collapse, saidiormers being provided-with stops.

betweensaid sets ,of parts to limit the exten-v sion and contraction ofthe former, and a connection between a set of parts of each '-io er and a set of parts of-the next former,- f eby the movement of oneformer after "Ltension andcontraction, will Vextend and contract the next former in the series.

l). A collapsible'former for moldingconzliiits in concrete and'plastic materiell consisting of four comer pieces a and four intermediate pieceei-b, said forni-er and intermediwhereby the longitudinal movements of oneA pered guides c, a set of corres onding pieces of one section being connecte with a set of corresponding pieces 'of the next section in the series.

11. A collapsible former Jfor moldin conduits 'in concrete and plastic materia consisting of fourl corner vpieces aand four intermediate ieces l), said pieces a vand vb being connected) at their edges by, complementary longitudinal taperedguidesc, vand the sto s 4v,'fcarried by the pieces banda respective y and adapted to limit the yextension of said pieces and the contraction of the former.-

l2fAnapparatus for molding conduits in concrete and plastic material composed of a ,seriesotindependent foiiners each consisting -l of foui'corner piecesal and four intermediate lpieces b, said pieces a and I) being connected at their edges by .complementary 'loiig'itudinaltapered guides c, and-the stops e, f, car- A ried' by the pieces b ande-respectively and adapted to limit theextension of said pieces after thesection has been contracted, and

detachable connections between one set of pieces of each section anda set of the pieces composing the next sectionfwhereby the movement of-a section after extensionand contraction will extend and contract the next section. i

In testimony of Winch-invention, l have hereunto set my hand.

A DAVID LEAvrr'rVHoUGH.

Witnesses:

LOYAL- LEALE, WALLACE STEVENS. 

